1. Department of Interdisciplinary Medicine, Aldo Moro University of Bari, Bari, Italy
2. Health Direction, University-General Hospital Policlinico, Bari, Italy
3. Department of Medicine and Surgery, University of Perugia, Perugia, Italy
4. Section of Hygiene, University Department of Life Sciences and Public Health, University Cattolica of Sacred Hearth, Rome, Italy
5. Department of Woman and Child Health and Public Health - Public Health Area, Fondazione Policlinico Universitario A. Gemelli IRCCS, Rome, Italy